U.S. patent number 6,372,201 [Application Number 09/539,422] was granted by the patent office on 2002-04-16 for nail varnish comprising an aqueous polymer dispersion.
This patent grant is currently assigned to L'Oreal. Invention is credited to Dolores Colombel, Frederic Leuridan, Bertrand Lion.
United States Patent |
6,372,201 |
Leuridan , et al. |
April 16, 2002 |
Nail varnish comprising an aqueous polymer dispersion
Abstract
A nail varnish or nailcare composition containing an aqueous
dispersion of particles of acrylic polymer having a glass
transition temperature (Tg) greater than or equal to 45.degree. C.
and a minimum film-forming temperature (MFT) such that
Tg-MFT.ltoreq.20.degree. C., a first organic solvent having a
boiling point measured at ambient pressure of greater than or equal
to 225.degree. C. and a second organic solvent having a boiling
point measured at ambient pressure ranging from 70.degree. C. to
180.degree. C. A method of making up and/or caring for the nails
which includes applying the composition to the nails. The nail
composition is adherent to the nail, is bright and is easily
removed with conventional removers.
Inventors: |
Leuridan; Frederic (Paris,
FR), Colombel; Dolores (L'Hay-les-Roses,
FR), Lion; Bertrand (Livry Gargan, FR) |
Assignee: |
L'Oreal (Paris,
FR)
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Family
ID: |
9543915 |
Appl.
No.: |
09/539,422 |
Filed: |
March 30, 2000 |
Foreign Application Priority Data
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Apr 1, 1999 [FR] |
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99 04103 |
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Current U.S.
Class: |
424/61; 424/489;
424/64; 424/497 |
Current CPC
Class: |
A61K
8/044 (20130101); A61K 8/8152 (20130101); A61K
8/375 (20130101); A61Q 3/02 (20130101) |
Current International
Class: |
A61K
9/16 (20060101); A61K 9/14 (20060101); A61K
007/04 (); A61K 007/025 (); A61K 009/14 (); A61K
009/16 () |
Field of
Search: |
;424/61,64,497,489 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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0 424 112 |
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Apr 1991 |
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EP |
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0 815 848 |
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Jan 1998 |
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EP |
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2 221 503 |
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Oct 1974 |
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FR |
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2 733 147 |
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Oct 1996 |
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FR |
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2 739 022 |
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Mar 1997 |
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FR |
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1465190 |
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Feb 1977 |
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GB |
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4-103513 |
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Apr 1992 |
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JP |
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4-297408 |
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Oct 1992 |
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JP |
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4-297409 |
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Oct 1992 |
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JP |
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5-39210 |
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Feb 1993 |
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JP |
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7-309721 |
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Nov 1995 |
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JP |
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8-92038 |
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Apr 1996 |
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JP |
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9-71512 |
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Mar 1997 |
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JP |
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WO 97/00664 |
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Jan 1997 |
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WO |
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Other References
Allan F.M. Barton, Ph.D., "CRC Handbook of Solubility Parameters
and Other Cohesion Parameters", Second Edition, 1991, pp. 95-109.
.
Charles M. Hansen, "The Three Dimensional Solubility Parameter--Key
to Paint Component Affinities: I. Solvents, Plasticizers, Polymers,
and Resins", Journal of Paint Technology, vol. 39, No. 505, Feb.
1967, pp. 104-117. .
A. Toussaint et al., "A Method to Predict the Distribution
Coefficient of Coalescing Agents Between Latex Particles and the
Water Phase", Progress in Organic Coatings, vol. 30, No. 3, Mar.
1997, pp. 173-177. .
Patent Abstracts of Japan, vol. 1998, No. 06, Apr. 30, 1998 (JP 10
036227). .
Patent Abstracts of Japan, vol. 1995, No. 07, Aug. 31, 1995 (JP 07
089827). .
English language Derwent Abstract of EP 0 815 848, Jan. 1998. .
English language Derwent Abstract of FR 2 221 503, Oct. 1974. .
English language Derwent Abstract of FR 2 733 147, Oct. 1996. .
English language Derwent Abstract of JP 4-103513, Apr. 1992. .
English language Derwent Abstract of JP 4-297408, Oct. 1992. .
English language Derwent Abstract of JP 4-297409, Oct. 1992. .
English language Derwent Abstract of JP 5-39210, Feb. 1993. .
English language Derwent Abstract of JP 7-309721, Nov. 1995. .
English language Derwent Abstract of JP 8-92038, Apr. 1996. .
English language Derwent Abstract of JP 9-71512, Mar.
1997..
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Primary Examiner: Page; Thurman K.
Assistant Examiner: Bennett; Rachel M.
Attorney, Agent or Firm: Finnegan, Henderson, Farabow,
Garrett & Dunner, L.L.P.
Claims
What is claimed is:
1. A nail varnish or nailcare composition comprising:
an aqueous dispersion of polymer particles,
at least one first organic solvent having a boiling point measured
at ambient pressure of greater than or equal to 225.degree. C.,
and
at least one second organic solvent having a boiling point measured
at ambient pressure ranging from 70.degree. C. to 180.degree.
C.,
wherein the aqueous dispersion of polymer particles comprises an
acrylic polymer having at least one glass transition temperature
(Tg) greater than or equal to 45.degree. C. and a minimum
film-forming temperature (MFT) such that Tg-MFT.ltoreq.20.degree.
C.
2. The composition as claimed in claim 1, wherein the acrylic
polymer has at least one glass transition temperature (Tg) greater
than or equal to 45.degree. C. and a minimum film-forming
temperature (MFT) such that Tg-MFT.ltoreq.10.degree. C.
3. The composition as claimed in claim 2, wherein the acrylic
polymer has at least one glass transition temperature (Tg) greater
than or equal to 45.degree. C. and a minimum film-forming
temperature (MPT) such that Tg-MFT.ltoreq.5.degree. C.
4. The composition as claimed in claim 1, wherein the glass
transition temperature (Tg) of the acrylic polymer is less than
70.degree. C.
5. The composition as claimed in claim 1, wherein the glass
transition temperature (Tg) of the acrylic polymer ranges from
55.degree. C. to 65.degree. C.
6. The composition as claimed in claim 1, wherein the acrylic
polymer comprises a styrene/acrylate copolymer.
7. The composition as claimed in claim 6, wherein the
styrene/acrylate copolymer comprises at least one (C.sub.1
-C.sub.18) alkyl (meth)acrylate monomeric unit.
8. The composition as claimed in claim 6, wherein the
styrene/acrylate copolymer comprises at least one (C.sub.1
-C.sub.10) alkyl acrylate monomeric unit.
9. The composition as claimed in claim 1, wherein the aqueous
dispersion of polymer particles consists essentially of the acrylic
polymer.
10. The composition as claimed in claim 1, wherein the acrylic
polymer is present, in terms of dry matter, in an amount ranging
from 3% to 50% by weight relative to the total weight of the
composition.
11. The composition as claimed in claim 10, wherein the acrylic
polymer is present, in terms of dry matter, in an amount ranging
from 10% to 40% by weight relative to the total weight of the
composition.
12. The composition as claimed in claim 1, wherein the at least one
first organic solvent has a boiling point measured at ambient
pressure of greater than or equal to 230.degree. C.
13. The composition as claimed in claim 1, wherein the at least one
first organic solvent has a distribution coefficient D of less than
or equal to 0.1.
14. The composition as claimed in claim 1, wherein the at least one
first organic solvent is chosen from diisobutyl adipate, the ester
of tertbutyl acid and 2,2,4-trimethylpentane-1,3-diol, diethyl
adipate, diethyl phthalate, dibutyl phthalate, dioctyl phthalate,
butyl 2-ethylhexyl phthalate, dimethyl sebacate, dibutyl sebacate,
ethyl stearate, 2-ethylhexyl palmitate, and dipropylene glycol
n-butyl ether.
15. The composition as claimed in claim 14, wherein the at least
one first organic solvent is chosen from diisobutyl adipate, the
ester of tertbutyl acid and 2,2,4-trimethylpentane-1,3-diol, and
dipropylene glycol n-butyl ether.
16. The composition as claimed in claim 1, wherein the at least one
first organic solvent is present in the composition in an amount
ranging from 0.1% to 20% by weight relative to the total weight of
the composition.
17. The composition as claimed in claim 16, wherein the at least
one first organic solvent is present in the composition in an
amount ranging from 0.5% to 10% by weight relative to the total
weight of the composition.
18. The composition as claimed in claim 1, wherein the at least one
second organic solvent has a distribution coefficient D' of greater
than or equal to 0.5.
19. The composition as claimed in claim 1, wherein the at least one
second organic solvent is chosen from propylene glycol n-butyl
ether, dipropylene glycol dimethyl ether, propylene glycol methyl
ether acetate, propylene glycol propyl ether, methyl lactate, ethyl
lactate, and isopropyl lactate.
20. The composition as claimed in claim 19, wherein the at least
one second organic solvent is chosen from propylene glycol n-butyl
ether, dipropylene glycol dimethyl ether, and isopropyl
lactate.
21. The composition as claimed in claim 1, wherein the at least one
second organic solvent is present in the composition in an amount
ranging from 2% to 15% by weight relative to the total weight of
the composition.
22. The composition as claimed in claim 1, wherein the at least one
second organic solvent is present in the composition in an amount
ranging from 3% to 10% by weight relative to the total weight of
the composition.
23. The composition as claimed in claim 1, further comprising at
least one additive chosen from thickeners, leveling agents, wetting
agents, dispersants, antifoams, preservatives, UV screens, dyes,
pigments, active principles, surfactants, moisturizers, perfumes,
neutralizing agents, stabilizers and antioxidants.
24. A method for making up and/or caring for nails comprising
applying to the nails a composition comprising:
an aqueous dispersion of polymer particles,
at least one first organic solvent having a boiling point measured
at ambient pressure of greater than or equal to 225.degree. C.,
and
at least one second organic solvent having a boiling point measured
at ambient pressure ranging from 70.degree. C. to 180.degree.
C.,
wherein the aqueous dispersion of polymer particles comprises an
acrylic polymer having at least one glass transition temperature
(Tg) greater than or equal to 45.degree. C. and a minimum
film-forming temperature (MFT) such that Tg-MFT.ltoreq.20.degree.
C.
25. A method of treating a nail to obtain a film which is removable
with acetone and/or with ethyl acetate and/or which is adherent to
the nail and/or bright comprising the step of applying to said nail
an effective amount of a composition comprising:
an aqueous dispersion of polymer particles,
at least one first organic solvent having a boiling point measured
at ambient pressure of greater than or equal to 225.degree. C.,
and
at least one second organic solvent having a boiling point measured
at ambient pressure ranging from 70.degree. C. to 180.degree.
C.,
wherein the aqueous dispersion of polymer particles comprises an
acrylic polymer having at least one glass transition temperature
(Tg) greater than or equal to 45.degree. C. and a minimum
film-forming temperature (MFT) such that Tg-MFT.ltoreq.20.degree.
C.
26. A composition according to claim 1, wherein said aqueous
dispersion of polymer particles comprises an acrylic polymer in
aqueous dispersion having solubility properties at 25.degree. C. in
an organic solvent, which satisfy the following conditions:
dD=17.5
dP=7
dH=7.6
with a radius R ranging from 5 to 10.
Description
This application claims priority to FRANCE 9904103 filed Apr. 1,
1999.
The present invention relates to a nail varnish or nailcare
composition comprising an aqueous dispersion of polymer particles,
a plasticizer and a coalescent. The invention also relates to a
method of making up and/or caring for the nails, especially human
nails or false nails.
The nail varnish or nailcare composition can be employed as a
varnish base, as a nail makeup product, as a finishing composition,
also referred to as a "topcoat", for application over a nail makeup
product, or else as a cosmetic nailcare product.
Nail varnish compositions are known which comprise aqueous
dispersions of particles of a film-forming polymer. The properties
of these varnishes are not always satisfactory. In particular, the
film may exhibit poor adhesion to the nail and/or may not be
sufficiently bright. Moreover, the varnish, after drying, is often
difficult to remove, even with the conventional removers based on
acetone or ethyl acetate, for example.
An object of the present invention is to provide an aqueous nail
varnish medium exhibiting good properties such as adhesion to the
nail and brightness and also removability with the conventional
removers based on acetate and/or ethyl acetate.
The inventors have found that such a nail varnish can be obtained
by employing an aqueous dispersion of polymer particles in
combination with selected solvents.
The invention provides a nail varnish or nailcare composition
comprising an aqueous dispersion of polymer particles, wherein:
the polymer is an acrylic polymer having at least one glass
transition temperature (Tg) greater than or equal to 45.degree. C.
and a minimum film-forming temperature (MFT) such that
and wherein the composition further comprises:
at least one first organic solvent having a boiling point measured
at ambient pressure of greater than or equal to 225.degree. C.,
and
at least one second organic solvent having a boiling point measured
at ambient pressure ranging from 70.degree. C. to 180.degree.
C.
The invention additionally provides a cosmetic makeup and/or
nailcare method which comprises applying a composition as defined
above to the nails.
The invention further provides for the use, in a nail varnish or
nailcare composition, of an acrylic polymer in aqueous dispersion
having at least one glass transition temperature (Tg) greater than
or equal to 45.degree. C. and a minimum film-forming temperature
(MFT) such that Tg-MFT.ltoreq.20.degree. C., of a first organic
solvent having a boiling point measured at ambient pressure of
greater than or equal to 225.degree. C., and of a second organic
solvent having a boiling point measured at ambient pressure ranging
from 70.degree. C. to 180.degree. C., to obtain a film which is
removable with acetone and/or with ethyl acetate and/or which is
adherent to the nail and/or bright.
Advantageously, the acrylic polymer has at least one glass
transition temperature (Tg) greater than or equal to 45.degree. C.
and a minimum film-forming temperature (MFT) such that
Tg-MFT.ltoreq.10.degree. C., and more preferably .ltoreq.5.degree.
C.
Preferably, the polymer in aqueous dispersion has a glass
transition temperature Tg of less than 70.degree. C. and more
preferably of from 55.degree. C. to 65.degree. C. The glass
transition temperature (Tg) is measured by DSC (Differential
Scanning Calorimetry) in accordance with the standard ASTM
D3418-97.
The acrylic polymer can be a styrene/acrylate copolymer and, in
particular, a polymer selected from copolymers obtained by
polymerizing at least one styrene monomer and at least one (C.sub.1
-C.sub.18) alkyl (meth)acrylate monomer.
As a styrene monomer which can be used in the invention, mention
may be made of styrene or alpha-methylstyrene, preferably
styrene.
The (C.sub.1 -C.sub.18) alkyl (meth)acrylate monomer is preferably
a (C.sub.1 -C.sub.12) alkyl (meth) acrylate and more preferably a
(C.sub.1 -C.sub.10) alkyl (meth)acrylate.
The (C.sub.1 -C.sub.18) alkyl (meth)acrylate monomer is selected
from methyl acrylate, methyl methacrylate, ethyl acrylate, propyl
acrylate, butyl acrylate, butyl methacrylate, hexyl acrylate, octyl
acrylate, 2-ethylhexyl acrylate, lauryl (meth)acrylate and stearyl
(meth)acrylate.
Advantageously, the acrylic polymer in aqueous dispersion has
solubility properties at 25.degree. C. in organic solvents,
corresponding to the average Hansen solubility parameters dD, dP
and dH, which satisfy the following conditions:
dD=17.5
dP=7
dH=7.6
with a radius R ranging from 5 to 10, and preferably from 5 to
6.
The definition of the solvents in the three-dimensional solubility
space according to Hansen is described in the article by C. M.
Hansen: "The three dimensional solubility parameters", J. Paint
Technol. 39, 105 (1967), the disclosure of which is specifically
incorporated by reference herein.
dD characterizes the London dispersion forces resulting from the
formation of dipoles induced on molecular impact.
dP characterizes the Debye interaction forces between permanent
dipoles and the Keesom interaction forces between induced dipoles
and permanent dipoles.
dH characterizes the specific interaction forces (of the hydrogen
bonding, acid/base, donor/acceptor type, etc.).
The parameters dD, dP and dH are expressed in
(J/Cm.sup.3).sup.1/2.
The radius R corresponds to the distance, in the Hansen solubility
parameter space, separating an organic solvent from the point in
the space corresponding to dD=17.5; dP=7; dH=7.6, R meeting the
following condition:
in which:
##EQU1##
where .delta..sup.s.sub.d, .delta..sup.s.sub.p, .delta..sup.s.sub.h
are the Hansen solubility parameters of an organic solvent for
which the acrylic polymer used in the present invention has
solubility properties. The definition of the radius R is known from
the work by Allan F. M. Barton, CRC Handbook of solubility
parameters and other cohesion parameters, Second edition, 1991,
pages 95 to 109, the disclosure of which is specifically
incorporated by reference herein.
As the acrylic polymer in aqueous dispersion, use may be made in
accordance with the invention of the styrene/acrylate copolymer
marketed under the name JONCRYL SCX-8211 by the company
Johnson.
In accordance with one particular embodiment of the invention, the
composition may comprise as sole polymer in aqueous dispersion the
acrylic polymer defined above.
The acrylic polymer in aqueous dispersion may be present in an
amount, in terms of dry matter, which is effective for forming a
film, preferably in an amount ranging from 3% to 50% by weight,
relative to the total weight of the composition, and more
preferably from 10% to 40% by weight.
The first organic solvent present in the composition, which is also
called the plasticizer, makes it possible to plasticize the polymer
in aqueous dispersion. Preferably, the first organic solvent can
have a distribution coefficient D of less than or equal to 0.1. The
distribution coefficient is determined in accordance with the
teaching of "A method to predict the distribution coefficient of
coalescing agents between latex particles and the water phase,"
Progress in Organic Coatings, vol. 30, 1997, pp. 173-177, the
disclosure of which is specifically incorporated by reference
herein.
The first organic solvent according to the invention is preferably
selected from diisobutyl adipate, the ester of tertbutyl acid and
2,2,4-trimethylpentane-1,3-diol, diethyl adipate, diethyl
phthalate, dibutyl phthalate, dioctyl phthalate, butyl 2-ethylhexyl
phthalate, dimethyl sebacate, dibutyl sebacate, ethyl stearate,
2-ethylhexyl palmitate, dipropylene glycol n-butyl ether, and
mixtures thereof.
Even more preferably, the first organic solvent may be selected
from diisobutyl adipate, the ester of tertbutyl acid and
2,2,4-trimethylpentane-1,3-diol, dipropylene glycol n-butyl ether,
and mixtures thereof.
Preferably, the first organic solvent has a boiling point measured
at ambient pressure of less than or equal to 285.degree. C.,
preferably less than or equal to 270.degree. C. and, more
preferably, less than or equal to 250.degree. C. In the present
specification, the boiling point values are to be considered
accurate to .+-.2.degree. C. owing to the uncertainties of boiling
point measurement.
The first organic solvent can be present in the composition
according to the invention in an amount preferably ranging from
0.1% to 20% by weight, relative to the total weight of the
composition, and more preferably from 0.5% to 10%.
The second organic solvent present in the composition, which is
also called the coalescent, promotes the coalescence of the polymer
particles in aqueous dispersion. Preferably, the second organic
solvent may have a distribution coefficient D' of greater than or
equal to 0.5, measured in accordance with the above-referenced "A
method to predict the distribution coefficient of coalescing agents
between latex particles and the water phase," Progress in Organic
Coatings, vol. 30, 1997, pp.173-177.
As the second organic solvent, use may be preferably made according
to the invention of propylene glycol n-butyl ether, dipropylene
glycol dimethyl ether, propylene glycol methyl ether acetate,
propylene glycol propyl ether, methyl lactate, ethyl lactate,
isopropyl lactate, and mixtures thereof.
More preferably, the second organic solvent is selected from
propylene glycol n-butyl ether, dipropylene glycol dimethyl ether,
isopropyl lactate, and mixtures thereof.
Preferably, the second organic solvent has a boiling point measured
at ambient pressure ranging from 90.degree. C. to 180.degree. C.,
and more preferably from 150.degree. C. to 180.degree. C.
The second organic solvent may be present in the composition in an
amount preferably ranging from 2% to 15% by weight, relative to the
total weight of the composition, more preferably from 3% to
10%.
The composition of the invention may further comprise at least one
additive chosen from thickeners, leveling agents, wetting agents,
dispersants, antifoams, preservatives, UV screens, dyes, pigments,
active principles, surfactants, moisturizers, perfumes,
neutralizing agents, stabilizers, antioxidants, and combinations
thereof.
The invention is illustrated in greater detail in the following
examples:
EXAMPLE 1
A nail varnish was prepared having the following composition:
acrylate-styrene polymer in aqueous 28.8 g a.s. (active substance)
dispersion containing 44% dry matter (JONCRYL SCX-8211 from the
company Johnson) diisobutyl adipate 2.8 g propylene glycol n-butyl
ether 2.7 g dipropylene glycol n-butyl ether 1.6 g Laponite XLS 0.8
g pigments 2 g water qsp 100 g
The varnish was easy to apply and led, after drying, to a bright
film which adhered well to the nail and was able to be removed with
acetone or ethyl acetate.
EXAMPLE 2
A nail varnish was prepared having the following composition:
acrylate-styrene polymer in aqueous 30 g a.s. dispersion containing
44% dry matter (JONCRYL SCX-8211 from the company Johnson) ester of
tertbutyl acid and 2.8 g 2,2,4-trimethylpentane-1,3-diol propylene
glycol n-butyl ether 2 g dipropylene glycol n-butyl ether 1.6 g
Laponite XLS 0.8 g pigments 2 g water qsp 100 g
The varnish was easy to apply and led, after drying, to a bright
film which adhered well to the nail and was able to be removed with
acetone or ethyl acetate.
* * * * *